4.53 out of 5 from 69 votes
Every day after school, the quiet and introverted student Kurosawa goes into the empty girls bathroom and "relieves himself". Besides this extremely odd ritual, Kurosawa also has a thirst for justice and a judgmental attitude towards his classmates. Upon seeing the bullying of an awkward girl in his class by two of the "popular" girls, he decides to bring justice to the bullies the only way he knows how. His plan for revenge goes "just as planned" until met by an unsuspected accomplice.
No, I'm not making this recommendation just because both protagonists' surname is Kurosawa.
Though the drawing style is very different (Onani's being much more appealing at first sight) and the age of the characters as well (Onani's Kurosawa is 14 or 15; the other Kurosawa is on his forties) both these stories focus on a social outcast that can't seem to get along with the people that surround him, whether that's on his own volition or because he lacks social skills. As the story goes on, both characters change steadily, and so do their relationships with their fellow classmates/coworkers and how those people look at the two. Love is an important matter as well, though in a different way for each.
Both manga include worrisome, mature themes such as bullying, harassment, homelessness or violence, and they take a deeper look at them than one would expect.
Out of the two, Saikyou Densetsu Kurosawa is surely the darker one, with a very pessimistic peek at society and slight rays of hope that amount to little.
Depending on why you liked either of these, you might greatly appreciate the other. If the reason is mainly some of the aforementioned, I think it's worth a try for you.
Punpun is a relatively normal elementary school student; he goes to lessons, does his homework and gets on well with his classmates. Unfortunately, it’s everyone else around him that’s bonkers! With a crowd of crazy teachers playing hide and seek or having extreme reactions to even the tiniest situation at school, his father kept at bay on domestic violence charges, and only his unemployed layabout uncle to look up to Punpun’s life is anything but simple. However, despite the mayhem surrounding him, Punpun still continues to quietly live on, contemplating his dreams, experiencing the joy and terror of falling in love, and trying to deal with his anxieties about sex, religion, and growing up.
Both are bleak but occasionally uplifting stories about aging, loss, regret, dreams, romance, those kinds of things. Kurosawa and Punpun are pretty cynical works with some humour thrown in. It would seem that they have similar morales too.